Automatic isolator switch SDF series

high-voltagecenter break

The SDF disconnectors are available up to 550 kV, 4000 A and 63 kA. These type of disconnectors have a low friction design and offer minimized contact resistance. They are equipped with dead center interlocking for reliability in extreme conditions. Some other important features of these disconnectors are: • No external spring in contact fingers • Superior design of mechanical interlock • Strong rotary pedestals • Ice breaking capacity Applications The horizontal center break disconnector is used at substations due to its simplicity and flexibility in arrangement. Why Hitachi ABB Power Grids? • Worldwide experience • Maximum reliability and minimal maintenance • Energy efficient solution • Easy and quick erection • Reliable and smooth operation • Suitable for wide range of environmental conditions